Silicon induced Fe deficiency affects Fe, Mn, Cu and Zn distribution in rice (Oryza sativa L.) growth in calcareous conditions
| العنوان: | Silicon induced Fe deficiency affects Fe, Mn, Cu and Zn distribution in rice (Oryza sativa L.) growth in calcareous conditions |
|---|---|
| المؤلفون: | Lourdes Hernández-Apaolaza, Rosario Pereiro, Sandra Carrasco-Gil, Vicenta de la Fuente, Sara Rodríguez-Menéndez, Beatriz Fernández |
| المساهمون: | UAM. Departamento de Biología |
| المصدر: | Biblos-e Archivo. Repositorio Institucional de la UAM instname |
| بيانات النشر: | Elsevier Masson SAS, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Silicon, Nutrient solution, Physiology, Iron, chemistry.chemical_element, Plant Science, 01 natural sciences, 03 medical and health sciences, Iron-localization, Genetics, Manganese, Oryza sativa, Chlorosis, Chemistry, Rice (Oryza sativa L.), food and beverages, Oryza, Iron Deficiencies, Química, Micronutrients distribution, Biología y Biomedicina / Biología, Apoplast, Combined approach, Oxidative Stress, Zinc, 030104 developmental biology, Calcareous, Copper, 010606 plant biology & botany, Nuclear chemistry, Iron-deficiency |
| الوصف: | A protective effect by silicon in the amelioration of iron chlorosis has recently been proved for Strategy 1 species, at acidic pH. However in calcareous conditions, the Si effect on Fe acquisition and distribution is still unknown. In this work, the effect of Si on Fe, Mn, Cu and Zn distribution was studied in rice (Strategy 2 species) under Fe sufficiency and deficiency. Plants (+Si or-Si) were grown initially with Fe, and then Fe was removed from the nutrient solution. The plants were then analysed using a combined approach including LA-ICP-MS images for each element of interest, the analysis of the Fe and Si concentration at different cell layers of root and leaf cross sections by SEM-EDX, and determining the apoplastic Fe, total micronutrient concentration and oxidative stress indexes. A different Si effect was observed depending on plant Fe status. Under Fe sufficiency, Si supply increased Fe root plaque formation, decreasing Fe concentration inside the root and increasing the oxidative stress in the plants. Therefore, Fe acquisition strategies were activated, and Fe translocation rate to the aerial parts was increased, even under an optimal Fe supply. Under Fe deficiency, +Si plants absorbed Fe from the plaque more rapidly than –Si plants, due to the previous activation of Fe deficiency strategies during the growing period (+Fe + Si). Higher Fe plaque formation due to Si supply during the growing period reduced Fe uptake and could activate Fe deficiency strategies in rice, making it more efficient against Fe chlorosis alterations. Silicon influenced Mn and Cu distribution in root. Authors gratefully acknowledge the financial support by Spanish Ministry of Economy and Competitiveness projects: AGL2013-44474-R and RYC-2014-14985 |
| وصف الملف: | application/pdf |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a54ec20542b103f6ce3723fdaa36b98Test http://hdl.handle.net/10486/684735Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2a54ec20542b103f6ce3723fdaa36b98 |
| قاعدة البيانات: | OpenAIRE |
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However in calcareous conditions, the Si effect on Fe acquisition and distribution is still unknown. In this work, the effect of Si on Fe, Mn, Cu and Zn distribution was studied in rice (Strategy 2 species) under Fe sufficiency and deficiency. Plants (+Si or-Si) were grown initially with Fe, and then Fe was removed from the nutrient solution. The plants were then analysed using a combined approach including LA-ICP-MS images for each element of interest, the analysis of the Fe and Si concentration at different cell layers of root and leaf cross sections by SEM-EDX, and determining the apoplastic Fe, total micronutrient concentration and oxidative stress indexes. A different Si effect was observed depending on plant Fe status. Under Fe sufficiency, Si supply increased Fe root plaque formation, decreasing Fe concentration inside the root and increasing the oxidative stress in the plants. 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